app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionItemHolder.java

   1 /*
   2  * Copyright © 2019 Damyan Ivanov.
   3  * This file is part of MoLe.
   4  * MoLe is free software: you can distribute it and/or modify it
   5  * under the term of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your opinion), any later version.
   8  *
   9  * MoLe is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License terms for details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.ktnx.mobileledger.ui.activity;
  19
  20 import android.annotation.SuppressLint;
  21 import android.graphics.Typeface;
  22 import android.text.Editable;
  23 import android.text.TextWatcher;
  24 import android.view.Gravity;
  25 import android.view.View;
  26 import android.view.ViewGroup;
  27 import android.view.inputmethod.EditorInfo;
  28 import android.widget.AutoCompleteTextView;
  29 import android.widget.EditText;
  30 import android.widget.FrameLayout;
  31 import android.widget.TextView;
  32
  33 import androidx.annotation.NonNull;
  34 import androidx.appcompat.app.AppCompatActivity;
  35 import androidx.constraintlayout.widget.ConstraintLayout;
  36 import androidx.lifecycle.Observer;
  37 import androidx.recyclerview.widget.RecyclerView;
  38
  39 import net.ktnx.mobileledger.R;
  40 import net.ktnx.mobileledger.async.DescriptionSelectedCallback;
  41 import net.ktnx.mobileledger.model.Currency;
  42 import net.ktnx.mobileledger.model.Data;
  43 import net.ktnx.mobileledger.model.LedgerTransactionAccount;
  44 import net.ktnx.mobileledger.model.MobileLedgerProfile;
  45 import net.ktnx.mobileledger.ui.CurrencySelectorFragment;
  46 import net.ktnx.mobileledger.ui.DatePickerFragment;
  47 import net.ktnx.mobileledger.ui.TextViewClearHelper;
  48 import net.ktnx.mobileledger.utils.Colors;
  49 import net.ktnx.mobileledger.utils.DimensionUtils;
  50 import net.ktnx.mobileledger.utils.Logger;
  51 import net.ktnx.mobileledger.utils.MLDB;
  52 import net.ktnx.mobileledger.utils.Misc;
  53
  54 import java.text.DecimalFormatSymbols;
  55 import java.util.Calendar;
  56 import java.util.Date;
  57 import java.util.GregorianCalendar;
  58 import java.util.Locale;
  59
  60 import static net.ktnx.mobileledger.ui.activity.NewTransactionModel.ItemType;
  61
  62 class NewTransactionItemHolder extends RecyclerView.ViewHolder
  63         implements DatePickerFragment.DatePickedListener, DescriptionSelectedCallback {
  64     private final String decimalDot;
  65     private final TextView tvCurrency;
  66     private final Observer<Boolean> showCommentsObserver;
  67     private final TextView tvTransactionComment;
  68     private String decimalSeparator;
  69     private NewTransactionModel.Item item;
  70     private TextView tvDate;
  71     private AutoCompleteTextView tvDescription;
  72     private AutoCompleteTextView tvAccount;
  73     private TextView tvComment;
  74     private EditText tvAmount;
  75     private ViewGroup lHead;
  76     private ViewGroup lAccount;
  77     private FrameLayout lPadding;
  78     private MobileLedgerProfile mProfile;
  79     private Date date;
  80     private Observer<Date> dateObserver;
  81     private Observer<String> descriptionObserver;
  82     private Observer<String> transactionCommentObserver;
  83     private Observer<String> hintObserver;
  84     private Observer<Integer> focusedAccountObserver;
  85     private Observer<Integer> accountCountObserver;
  86     private Observer<Boolean> editableObserver;
  87     private Observer<Currency.Position> currencyPositionObserver;
  88     private Observer<Boolean> currencyGapObserver;
  89     private Observer<Locale> localeObserver;
  90     private Observer<Currency> currencyObserver;
  91     private Observer<Boolean> showCurrencyObserver;
  92     private Observer<String> commentObserver;
  93     private Observer<Boolean> amountValidityObserver;
  94     private boolean inUpdate = false;
  95     private boolean syncingData = false;
  96     private View commentButton;
  97     //TODO multiple amounts with different currencies per posting
  98     NewTransactionItemHolder(@NonNull View itemView, NewTransactionItemsAdapter adapter) {
  99         super(itemView);
 100         lAccount = itemView.findViewById(R.id.ntr_account);
 101         tvAccount = lAccount.findViewById(R.id.account_row_acc_name);
 102         tvComment = lAccount.findViewById(R.id.comment);
 103         tvTransactionComment = itemView.findViewById(R.id.transaction_comment);
 104         new TextViewClearHelper().attachToTextView((EditText) tvComment);
 105         commentButton = lAccount.findViewById(R.id.comment_button);
 106         tvAmount = itemView.findViewById(R.id.account_row_acc_amounts);
 107         tvCurrency = itemView.findViewById(R.id.currency);
 108         tvDate = itemView.findViewById(R.id.new_transaction_date);
 109         tvDescription = itemView.findViewById(R.id.new_transaction_description);
 110         lHead = itemView.findViewById(R.id.ntr_data);
 111         lPadding = itemView.findViewById(R.id.ntr_padding);
 112         final View commentLayout = itemView.findViewById(R.id.comment_layout);
 113         final View transactionCommentLayout =
 114                 itemView.findViewById(R.id.transaction_comment_layout);
 115
 116         tvDescription.setNextFocusForwardId(View.NO_ID);
 117         tvAccount.setNextFocusForwardId(View.NO_ID);
 118         tvAmount.setNextFocusForwardId(View.NO_ID); // magic!
 119
 120         tvDate.setOnClickListener(v -> pickTransactionDate());
 121
 122         commentButton.setOnClickListener(v -> {
 123             tvComment.setVisibility(View.VISIBLE);
 124             tvComment.requestFocus();
 125         });
 126
 127         transactionCommentLayout.findViewById(R.id.comment_button)
 128                                 .setOnClickListener(v -> {
 129                                     tvTransactionComment.setVisibility(View.VISIBLE);
 130                                     tvTransactionComment.requestFocus();
 131                                 });
 132
 133         mProfile = Data.profile.getValue();
 134         if (mProfile == null)
 135             throw new AssertionError();
 136
 137         View.OnFocusChangeListener focusMonitor = (v, hasFocus) -> {
 138             final int id = v.getId();
 139             if (hasFocus) {
 140                 boolean wasSyncing = syncingData;
 141                 syncingData = true;
 142                 try {
 143                     final int pos = getAdapterPosition();
 144                     adapter.updateFocusedItem(pos);
 145                     switch (id) {
 146                         case R.id.account_row_acc_name:
 147                             adapter.noteFocusIsOnAccount(pos);
 148                             break;
 149                         case R.id.account_row_acc_amounts:
 150                             adapter.noteFocusIsOnAmount(pos);
 151                             break;
 152                         case R.id.comment:
 153                             adapter.noteFocusIsOnComment(pos);
 154                             break;
 155                         case R.id.transaction_comment:
 156                             adapter.noteFocusIsOnTransactionComment(pos);
 157                             break;
 158                         case R.id.new_transaction_description:
 159                             adapter.noteFocusIsOnDescription(pos);
 160                             break;
 161                     }
 162                 }
 163                 finally {
 164                     syncingData = wasSyncing;
 165                 }
 166             }
 167
 168             if (id == R.id.comment) {
 169                 commentFocusChanged(commentLayout, tvComment, hasFocus);
 170             }
 171             else if (id == R.id.transaction_comment) {
 172                 commentFocusChanged(transactionCommentLayout, tvTransactionComment, hasFocus);
 173             }
 174         };
 175
 176         tvDescription.setOnFocusChangeListener(focusMonitor);
 177         tvAccount.setOnFocusChangeListener(focusMonitor);
 178         tvAmount.setOnFocusChangeListener(focusMonitor);
 179         tvComment.setOnFocusChangeListener(focusMonitor);
 180         tvTransactionComment.setOnFocusChangeListener(focusMonitor);
 181
 182         MLDB.hookAutocompletionAdapter(tvDescription.getContext(), tvDescription,
 183                 MLDB.DESCRIPTION_HISTORY_TABLE, "description", false, adapter, mProfile);
 184         MLDB.hookAutocompletionAdapter(tvAccount.getContext(), tvAccount, MLDB.ACCOUNTS_TABLE,
 185                 "name", true, this, mProfile);
 186
 187         decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance()
 188                                                               .getMonetaryDecimalSeparator());
 189         localeObserver = locale -> {
 190             decimalSeparator = String.valueOf(DecimalFormatSymbols.getInstance(locale)
 191                                                                   .getMonetaryDecimalSeparator());
 192         };
 193
 194         decimalDot = ".";
 195
 196         final TextWatcher tw = new TextWatcher() {
 197             @Override
 198             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 199             }
 200
 201             @Override
 202             public void onTextChanged(CharSequence s, int start, int before, int count) {
 203             }
 204
 205             @Override
 206             public void afterTextChanged(Editable s) {
 207 //                debug("input", "text changed");
 208                 if (inUpdate)
 209                     return;
 210
 211                 Logger.debug("textWatcher", "calling syncData()");
 212                 syncData();
 213                 Logger.debug("textWatcher",
 214                         "syncData() returned, checking if transaction is submittable");
 215                 adapter.checkTransactionSubmittable();
 216                 Logger.debug("textWatcher", "done");
 217             }
 218         };
 219         final TextWatcher amountWatcher = new TextWatcher() {
 220             @Override
 221             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 222                 Logger.debug("num",
 223                         String.format(Locale.US, "beforeTextChanged: start=%d, count=%d, after=%d",
 224                                 start, count, after));
 225             }
 226             @Override
 227             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 228             @Override
 229             public void afterTextChanged(Editable s) {
 230
 231                 if (syncData())
 232                     adapter.checkTransactionSubmittable();
 233             }
 234         };
 235         tvDescription.addTextChangedListener(tw);
 236         tvTransactionComment.addTextChangedListener(tw);
 237         tvAccount.addTextChangedListener(tw);
 238         tvComment.addTextChangedListener(tw);
 239         tvAmount.addTextChangedListener(amountWatcher);
 240
 241         tvCurrency.setOnClickListener(v -> {
 242             CurrencySelectorFragment cpf = new CurrencySelectorFragment();
 243             cpf.showPositionAndPadding();
 244             cpf.setOnCurrencySelectedListener(c -> item.setCurrency(c));
 245             final AppCompatActivity activity = (AppCompatActivity) v.getContext();
 246             cpf.show(activity.getSupportFragmentManager(), "currency-selector");
 247         });
 248
 249         dateObserver = date -> {
 250             if (syncingData)
 251                 return;
 252             syncingData = true;
 253             try {
 254                 tvDate.setText(item.getFormattedDate());
 255             }
 256             finally {
 257                 syncingData = false;
 258             }
 259         };
 260         descriptionObserver = description -> {
 261             if (syncingData)
 262                 return;
 263             syncingData = true;
 264             try {
 265                 tvDescription.setText(description);
 266             }
 267             finally {
 268                 syncingData = false;
 269             }
 270         };
 271         transactionCommentObserver = transactionComment -> {
 272             final View focusedView = tvTransactionComment.findFocus();
 273             tvTransactionComment.setTypeface(null,
 274                     (focusedView == tvTransactionComment) ? Typeface.NORMAL : Typeface.ITALIC);
 275             tvTransactionComment.setVisibility(((focusedView != tvTransactionComment) &&
 276                                                 Misc.isEmptyOrNull(transactionComment))
 277                                                ? View.INVISIBLE : View.VISIBLE);
 278
 279         };
 280         hintObserver = hint -> {
 281             if (syncingData)
 282                 return;
 283             syncingData = true;
 284             try {
 285                 if (hint == null)
 286                     tvAmount.setHint(R.string.zero_amount);
 287                 else
 288                     tvAmount.setHint(hint);
 289             }
 290             finally {
 291                 syncingData = false;
 292             }
 293         };
 294         editableObserver = this::setEditable;
 295         focusedAccountObserver = index -> {
 296             if ((index == null) || !index.equals(getAdapterPosition()) || itemView.hasFocus())
 297                 return;
 298
 299             switch (item.getType()) {
 300                 case generalData:
 301                     // bad idea - double pop-up, and not really necessary.
 302                     // the user can tap the input to get the calendar
 303                     //if (!tvDate.hasFocus()) tvDate.requestFocus();
 304                     switch (item.getFocusedElement()) {
 305                         case TransactionComment:
 306                             tvTransactionComment.setVisibility(View.VISIBLE);
 307                             tvTransactionComment.requestFocus();
 308                             break;
 309                         case Description:
 310                             boolean focused = tvDescription.requestFocus();
 311                             tvDescription.dismissDropDown();
 312                             if (focused)
 313                                 Misc.showSoftKeyboard(
 314                                         (NewTransactionActivity) tvDescription.getContext());
 315                             break;
 316                     }
 317                     break;
 318                 case transactionRow:
 319                     switch (item.getFocusedElement()) {
 320                         case Amount:
 321                             tvAmount.requestFocus();
 322                             break;
 323                         case Comment:
 324                             tvComment.setVisibility(View.VISIBLE);
 325                             tvComment.requestFocus();
 326                             break;
 327                         case Account:
 328                             boolean focused = tvAccount.requestFocus();
 329                             tvAccount.dismissDropDown();
 330                             if (focused)
 331                                 Misc.showSoftKeyboard(
 332                                         (NewTransactionActivity) tvAccount.getContext());
 333                             break;
 334                     }
 335
 336                     break;
 337             }
 338         };
 339         accountCountObserver = count -> {
 340             final int adapterPosition = getAdapterPosition();
 341             final int layoutPosition = getLayoutPosition();
 342             Logger.debug("holder",
 343                     String.format(Locale.US, "count=%d; pos=%d, layoutPos=%d [%s]", count,
 344                             adapterPosition, layoutPosition, item.getType()
 345                                                                  .toString()
 346                                                                  .concat(item.getType() ==
 347                                                                          ItemType.transactionRow
 348                                                                          ? String.format(Locale.US,
 349                                                                          "'%s'=%s",
 350                                                                          item.getAccount()
 351                                                                              .getAccountName(),
 352                                                                          item.getAccount()
 353                                                                              .isAmountSet()
 354                                                                          ? String.format(Locale.US,
 355                                                                                  "%.2f",
 356                                                                                  item.getAccount()
 357                                                                                      .getAmount())
 358                                                                          : "unset") : "")));
 359             if (adapterPosition == count)
 360                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_DONE);
 361             else
 362                 tvAmount.setImeOptions(EditorInfo.IME_ACTION_NEXT);
 363         };
 364
 365         currencyObserver = currency -> {
 366             setCurrency(currency);
 367             adapter.checkTransactionSubmittable();
 368         };
 369
 370         currencyGapObserver =
 371                 hasGap -> updateCurrencyPositionAndPadding(Data.currencySymbolPosition.getValue(),
 372                         hasGap);
 373
 374         currencyPositionObserver =
 375                 position -> updateCurrencyPositionAndPadding(position, Data.currencyGap.getValue());
 376
 377         showCurrencyObserver = showCurrency -> {
 378             if (showCurrency) {
 379                 tvCurrency.setVisibility(View.VISIBLE);
 380             }
 381             else {
 382                 tvCurrency.setVisibility(View.GONE);
 383                 item.setCurrency(null);
 384             }
 385         };
 386
 387         commentObserver = comment -> {
 388             final View focusedView = tvComment.findFocus();
 389             tvComment.setTypeface(null,
 390                     (focusedView == tvComment) ? Typeface.NORMAL : Typeface.ITALIC);
 391             tvComment.setVisibility(
 392                     ((focusedView != tvComment) && Misc.isEmptyOrNull(comment)) ? View.INVISIBLE
 393                                                                                 : View.VISIBLE);
 394         };
 395
 396         showCommentsObserver = show -> {
 397             final View amountLayout = itemView.findViewById(R.id.amount_layout);
 398             ConstraintLayout.LayoutParams amountLayoutParams =
 399                     (ConstraintLayout.LayoutParams) amountLayout.getLayoutParams();
 400             ConstraintLayout.LayoutParams accountParams =
 401                     (ConstraintLayout.LayoutParams) tvAccount.getLayoutParams();
 402             if (show) {
 403                 accountParams.endToStart = ConstraintLayout.LayoutParams.UNSET;
 404                 accountParams.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 405
 406                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.UNSET;
 407                 amountLayoutParams.topToBottom = tvAccount.getId();
 408
 409                 commentLayout.setVisibility(View.VISIBLE);
 410             }
 411             else {
 412                 accountParams.endToStart = amountLayout.getId();
 413                 accountParams.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 414
 415                 amountLayoutParams.topToBottom = ConstraintLayout.LayoutParams.UNSET;
 416                 amountLayoutParams.topToTop = ConstraintLayout.LayoutParams.PARENT_ID;
 417
 418                 commentLayout.setVisibility(View.GONE);
 419             }
 420
 421             tvAccount.setLayoutParams(accountParams);
 422             amountLayout.setLayoutParams(amountLayoutParams);
 423
 424             transactionCommentLayout.setVisibility(show ? View.VISIBLE : View.GONE);
 425         };
 426
 427         amountValidityObserver = valid -> {
 428             tvAmount.setCompoundDrawablesRelativeWithIntrinsicBounds(
 429                     valid ? 0 : R.drawable.ic_error_outline_black_24dp, 0, 0, 0);
 430             tvAmount.setMinEms(valid ? 4 : 5);
 431         };
 432     }
 433     private void commentFocusChanged(View layout, TextView textView, boolean hasFocus) {
 434         int textColor;
 435         if (hasFocus) {
 436             textColor = Colors.defaultTextColor;
 437             textView.setTypeface(null, Typeface.NORMAL);
 438             textView.setHint(R.string.transaction_account_comment_hint);
 439         }
 440         else {
 441             textColor = Colors.defaultTextColorDisabled;
 442             textView.setTypeface(null, Typeface.ITALIC);
 443             textView.setHint("");
 444             if (Misc.isEmptyOrNull(textView.getText())) {
 445                 textView.setVisibility(View.INVISIBLE);
 446             }
 447         }
 448         textView.setTextColor(textColor);
 449
 450     }
 451     private void updateCurrencyPositionAndPadding(Currency.Position position, boolean hasGap) {
 452         ConstraintLayout.LayoutParams amountLP =
 453                 (ConstraintLayout.LayoutParams) tvAmount.getLayoutParams();
 454         ConstraintLayout.LayoutParams currencyLP =
 455                 (ConstraintLayout.LayoutParams) tvCurrency.getLayoutParams();
 456
 457         if (position == Currency.Position.before) {
 458             currencyLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 459             currencyLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 460
 461             amountLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 462             amountLP.endToStart = ConstraintLayout.LayoutParams.UNSET;
 463             amountLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 464             amountLP.startToEnd = tvCurrency.getId();
 465
 466             tvCurrency.setGravity(Gravity.END);
 467         }
 468         else {
 469             currencyLP.startToStart = ConstraintLayout.LayoutParams.UNSET;
 470             currencyLP.endToEnd = ConstraintLayout.LayoutParams.PARENT_ID;
 471
 472             amountLP.startToStart = ConstraintLayout.LayoutParams.PARENT_ID;
 473             amountLP.startToEnd = ConstraintLayout.LayoutParams.UNSET;
 474             amountLP.endToEnd = ConstraintLayout.LayoutParams.UNSET;
 475             amountLP.endToStart = tvCurrency.getId();
 476
 477             tvCurrency.setGravity(Gravity.START);
 478         }
 479
 480         amountLP.resolveLayoutDirection(tvAmount.getLayoutDirection());
 481         currencyLP.resolveLayoutDirection(tvCurrency.getLayoutDirection());
 482
 483         tvAmount.setLayoutParams(amountLP);
 484         tvCurrency.setLayoutParams(currencyLP);
 485
 486         // distance between the amount and the currency symbol
 487         int gapSize = DimensionUtils.sp2px(tvCurrency.getContext(), 5);
 488
 489         if (position == Currency.Position.before) {
 490             tvCurrency.setPaddingRelative(0, 0, hasGap ? gapSize : 0, 0);
 491         }
 492         else {
 493             tvCurrency.setPaddingRelative(hasGap ? gapSize : 0, 0, 0, 0);
 494         }
 495     }
 496     private void setCurrencyString(String currency) {
 497         if ((currency == null) || currency.isEmpty()) {
 498             tvCurrency.setText(R.string.currency_symbol);
 499             tvCurrency.setTextColor(0x7f000000 + (0x00ffffff & Colors.defaultTextColor));
 500         }
 501         else {
 502             tvCurrency.setText(currency);
 503             tvCurrency.setTextColor(Colors.defaultTextColor);
 504         }
 505     }
 506     private void setCurrency(Currency currency) {
 507         setCurrencyString((currency == null) ? null : currency.getName());
 508     }
 509     private void setEditable(Boolean editable) {
 510         tvDate.setEnabled(editable);
 511         tvDescription.setEnabled(editable);
 512         tvAccount.setEnabled(editable);
 513         tvAmount.setEnabled(editable);
 514     }
 515     private void beginUpdates() {
 516         if (inUpdate)
 517             throw new RuntimeException("Already in update mode");
 518         inUpdate = true;
 519     }
 520     private void endUpdates() {
 521         if (!inUpdate)
 522             throw new RuntimeException("Not in update mode");
 523         inUpdate = false;
 524     }
 525     /**
 526      * syncData()
 527      * <p>
 528      * Stores the data from the UI elements into the model item
 529      * Returns true if there were changes made that suggest transaction has to be
 530      * checked for being submittable
 531      */
 532     private boolean syncData() {
 533         if (item == null)
 534             return false;
 535
 536         if (syncingData) {
 537             Logger.debug("new-trans", "skipping syncData() loop");
 538             return false;
 539         }
 540
 541         syncingData = true;
 542
 543         try {
 544             switch (item.getType()) {
 545                 case generalData:
 546                     item.setDate(String.valueOf(tvDate.getText()));
 547                     item.setDescription(String.valueOf(tvDescription.getText()));
 548                     item.setTransactionComment(String.valueOf(tvTransactionComment.getText()));
 549                     break;
 550                 case transactionRow:
 551                     final LedgerTransactionAccount account = item.getAccount();
 552                     account.setAccountName(String.valueOf(tvAccount.getText()));
 553
 554                     item.setComment(String.valueOf(tvComment.getText()));
 555
 556                     String amount = String.valueOf(tvAmount.getText());
 557                     amount = amount.trim();
 558
 559                     if (amount.isEmpty()) {
 560                         account.resetAmount();
 561                         item.validateAmount();
 562                     }
 563                     else {
 564                         try {
 565                             amount = amount.replace(decimalSeparator, decimalDot);
 566                             account.setAmount(Float.parseFloat(amount));
 567                             item.validateAmount();
 568                         }
 569                         catch (NumberFormatException e) {
 570                             Logger.debug("new-trans", String.format(
 571                                     "assuming amount is not set due to number format exception. " +
 572                                     "input was '%s'", amount));
 573                             account.invalidateAmount();
 574                             item.invalidateAmount();
 575                         }
 576                         final String curr = String.valueOf(tvCurrency.getText());
 577                         if (curr.equals(tvCurrency.getContext()
 578                                                   .getResources()
 579                                                   .getString(R.string.currency_symbol)) ||
 580                             curr.isEmpty())
 581                             account.setCurrency(null);
 582                         else
 583                             account.setCurrency(curr);
 584                     }
 585
 586                     break;
 587                 case bottomFiller:
 588                     throw new RuntimeException("Should not happen");
 589             }
 590
 591             return true;
 592         }
 593         finally {
 594             syncingData = false;
 595         }
 596     }
 597     private void pickTransactionDate() {
 598         DatePickerFragment picker = new DatePickerFragment();
 599         picker.setFutureDates(mProfile.getFutureDates());
 600         picker.setOnDatePickedListener(this);
 601         picker.setCurrentDateFromText(tvDate.getText());
 602         picker.show(((NewTransactionActivity) tvDate.getContext()).getSupportFragmentManager(),
 603                 "datePicker");
 604     }
 605     /**
 606      * setData
 607      *
 608      * @param item updates the UI elements with the data from the model item
 609      */
 610     @SuppressLint("DefaultLocale")
 611     public void setData(NewTransactionModel.Item item) {
 612         beginUpdates();
 613         try {
 614             if (this.item != null && !this.item.equals(item)) {
 615                 this.item.stopObservingDate(dateObserver);
 616                 this.item.stopObservingDescription(descriptionObserver);
 617                 this.item.stopObservingTransactionComment(transactionCommentObserver);
 618                 this.item.stopObservingAmountHint(hintObserver);
 619                 this.item.stopObservingEditableFlag(editableObserver);
 620                 this.item.getModel()
 621                          .stopObservingFocusedItem(focusedAccountObserver);
 622                 this.item.getModel()
 623                          .stopObservingAccountCount(accountCountObserver);
 624                 Data.currencySymbolPosition.removeObserver(currencyPositionObserver);
 625                 Data.currencyGap.removeObserver(currencyGapObserver);
 626                 Data.locale.removeObserver(localeObserver);
 627                 this.item.stopObservingCurrency(currencyObserver);
 628                 this.item.getModel().showCurrency.removeObserver(showCurrencyObserver);
 629                 this.item.stopObservingComment(commentObserver);
 630                 this.item.getModel().showComments.removeObserver(showCommentsObserver);
 631                 this.item.stopObservingAmountValidity(amountValidityObserver);
 632
 633                 this.item = null;
 634             }
 635
 636             switch (item.getType()) {
 637                 case generalData:
 638                     tvDate.setText(item.getFormattedDate());
 639                     tvDescription.setText(item.getDescription());
 640                     tvTransactionComment.setText(item.getTransactionComment());
 641                     lHead.setVisibility(View.VISIBLE);
 642                     lAccount.setVisibility(View.GONE);
 643                     lPadding.setVisibility(View.GONE);
 644                     setEditable(true);
 645                     break;
 646                 case transactionRow:
 647                     LedgerTransactionAccount acc = item.getAccount();
 648                     tvAccount.setText(acc.getAccountName());
 649                     tvComment.setText(acc.getComment());
 650                     if (acc.isAmountSet()) {
 651                         tvAmount.setText(String.format("%1.2f", acc.getAmount()));
 652                     }
 653                     else {
 654                         tvAmount.setText("");
 655 //                        tvAmount.setHint(R.string.zero_amount);
 656                     }
 657                     tvAmount.setHint(item.getAmountHint());
 658                     setCurrencyString(acc.getCurrency());
 659                     lHead.setVisibility(View.GONE);
 660                     lAccount.setVisibility(View.VISIBLE);
 661                     lPadding.setVisibility(View.GONE);
 662                     setEditable(true);
 663                     break;
 664                 case bottomFiller:
 665                     lHead.setVisibility(View.GONE);
 666                     lAccount.setVisibility(View.GONE);
 667                     lPadding.setVisibility(View.VISIBLE);
 668                     setEditable(false);
 669                     break;
 670             }
 671             if (this.item == null) { // was null or has changed
 672                 this.item = item;
 673                 final NewTransactionActivity activity =
 674                         (NewTransactionActivity) tvDescription.getContext();
 675
 676                 if (!item.isOfType(ItemType.bottomFiller)) {
 677                     item.observeEditableFlag(activity, editableObserver);
 678                     item.getModel()
 679                         .observeFocusedItem(activity, focusedAccountObserver);
 680                     item.getModel()
 681                         .observeShowComments(activity, showCommentsObserver);
 682                 }
 683                 switch (item.getType()) {
 684                     case generalData:
 685                         item.observeDate(activity, dateObserver);
 686                         item.observeDescription(activity, descriptionObserver);
 687                         item.observeTransactionComment(activity, transactionCommentObserver);
 688                         break;
 689                     case transactionRow:
 690                         item.observeAmountHint(activity, hintObserver);
 691                         Data.currencySymbolPosition.observe(activity, currencyPositionObserver);
 692                         Data.currencyGap.observe(activity, currencyGapObserver);
 693                         Data.locale.observe(activity, localeObserver);
 694                         item.observeCurrency(activity, currencyObserver);
 695                         item.getModel().showCurrency.observe(activity, showCurrencyObserver);
 696                         item.observeComment(activity, commentObserver);
 697                         item.getModel()
 698                             .observeAccountCount(activity, accountCountObserver);
 699                         item.observeAmountValidity(activity, amountValidityObserver);
 700                         break;
 701                 }
 702             }
 703         }
 704         finally {
 705             endUpdates();
 706         }
 707     }
 708     @Override
 709     public void onDatePicked(int year, int month, int day) {
 710         final Calendar c = GregorianCalendar.getInstance();
 711         c.set(year, month, day);
 712         item.setDate(c.getTime());
 713         boolean focused = tvDescription.requestFocus();
 714         if (focused)
 715             Misc.showSoftKeyboard((NewTransactionActivity) tvAccount.getContext());
 716
 717     }
 718     @Override
 719     public void descriptionSelected(String description) {
 720         tvAccount.setText(description);
 721         tvAmount.requestFocus(View.FOCUS_FORWARD);
 722     }
 723 }